noise is one of the main parameters to be considered to achieve a healthy indoor ambience in ferries. therefore, the noise standards need to be more specialized and specifically based on real sampled data and case studies. in the present research, the noise levels in a ship, under different working conditions, were sampled and compared with those specified in the new and old standards. an initi...

objective: this study aimed to determine the relations between cognitive variables (self efficacy, locus of control, and dysfunctional attitudes) and psychological morbidities with using doping agents in adolescent athletes. methods: we conducted a case-control study in kermanshah among adolescent athletes using 50 athletic drug users with reported use as a case group and 50 athletic nonusers a...

Case-chaos methodology is a proposed alternative to case-control studies that simulates controls by randomly reshuffling the exposures of cases. We evaluated the method using data on outbreaks in Sweden. We identified 5 case-control studies from foodborne illness outbreaks that occurred between 2005 and 2012. Using case-chaos methodology, we calculated odds ratios 1,000 times for each exposure....

conclusions the results of the present study demonstrate that oral contraceptives containing estradiol can lead to candida colonization in the oral cavity. it is recommended that further studies comparing the influence of oral contraceptives on candida’s adherence to the epithelium is highly recommended. results the frequency of positive cultures of candida albicans was higher (p value = 0.03) ...

Bayesian methods are proposed for analysing matched case-control studies in which a binary exposure variable is sometimes measured with error, but whose correct values have been validated for a random sample of the matched case-control sets. Three models are considered. Model 1 makes few assumptions other than randomness and independence between matched sets, while Models 2 and 3 are logistic m...